异常日志以及非异常日志记录方法

 private void WriteLog(Exception ex, string msg, bool flag)

        {

            try

            {

                string fileName = string.Empty;

                if (flag == true)

                {

                    if (!Directory.Exists("没有文件的记录的\\"))

                    {

                        Directory.CreateDirectory("没有文件的记录的\\");

                    }



                    fileName = "没有文件的记录的\\Log.txt";



                    if (!File.Exists(fileName))

                    {

                        StreamWriter sr;

                        sr = File.CreateText(fileName);

                        sr.Close();

                    }

                }

                else

                {

                    if (!Directory.Exists("异常日志\\"))

                    {

                        Directory.CreateDirectory("异常日志\\");

                    }



                    fileName = "异常日志\\errLog.txt";



                    if (!File.Exists(fileName))

                    {

                        StreamWriter sr;

                        sr = File.CreateText(fileName);

                        sr.Close();

                    }



                }



                //定义文件信息对象

                FileInfo finfo = new FileInfo(fileName);



                //判断文件是否存在以及是否大于5M 5242880

                if (finfo.Exists && finfo.Length > 5242880)

                {

                    try

                    {

                        //删除该文件

                        finfo.Delete();

                    }

                    catch

                    {

                    }



                }

                using (StreamWriter writer = new StreamWriter(fileName, true, System.Text.Encoding.UTF8, 1024))

                {

                    writer.WriteLine(String.Empty);





                    if (flag == true)

                    {

                        writer.WriteLine("不存在的影像");

                        writer.WriteLine("记录时间:   {0}", DateTime.Now.ToString());

                        writer.WriteLine("记录信息:   {0}", msg);

                    }

                    else

                    {

                        writer.WriteLine(msg);

                        writer.WriteLine("出错时间:   {0}", DateTime.Now.ToString());

                        writer.WriteLine("出错信息:   {0}", ex.Message);

                        writer.WriteLine("详细信息:   {0}", ex.StackTrace);

                    }

                    writer.WriteLine(String.Empty);

                    writer.WriteLine("*********************************************************************");

                    writer.Flush();

                    writer.Close();

                }

            }

            catch

            {



            }

        }



        /// <summary>

        /// 没找到的文件记录

        /// </summary>

        private void WriteLog(string msg)

        {

            WriteLog(null, msg, true);

        }